Environment Canada has issued a tornado watch for Saskatoon and the area.

The combination of an unstable air mass, daytime heating and a low pressure system moving into the province from Alberta this morning will create conditions to create severe thunderstorms this afternoon, Environment Canada said. The storm could also produce large hail, heavy rain, lightening and powerful winds.

There are also tornado watches for Martensville, Warman, Rosthern, Delisle and Wakaw.

If severe weather approaches, or you feel threatened, Environment Canada reminds people to take shelter immediately. If you see a funnel cloud or tornado call 1-800-239-0484 to report it.

10 Tornado Safety Tips

Here are some tips on how to prepare for a tornado and what to do if you're caught in the path of a twister.

  • Know the danger signs of a tornado. They include dark, often greenish clouds, large hail, a funnel cloud, a roaring noise. Look for whirling dust or debris under a cloud base. Some tornadoes don't have funnel clouds.
  • Know tornado watches and tornado warnings. A "watch" means that a tornado is possible in the next several hours so you should be ready to move to a safe place quickly. A "warning" means that a tornado has been spotted in your area.
  • When a warning has been issued it's time to move to a safer location.
  • Prepare for tornadoes by gathering emergency supplies including food, water, medications, batteries flashlights, important documents, road maps, and a full tank of gasoline.
  • Move lawn furniture if time permits. Strong winds can turn deck chairs into projectiles.
  • Take shelter preferably in a basement or an interior room or under a stairwell.
  • Avoid windows and seek additional protection by getting underneath large, solid pieces of furniture or cover yourself with a mattress.
  • Avoid automobiles and mobile homes, which provide almost no protection from tornadoes.
  • Those caught outside should lie flat and face down on the lowest ground you can reach.
  • Use your arms to protect the back of your head. Try and stay away from trees if possible, since they can be knocked over and land on you.